Headlight-curtain.



W. L. RUSSELL HBADLIGHT CURTAIN.

APPLICATION FILED JAN. 2, 1912,

' a Aroitizeniof the.l YlVellsboro,l fin' the' a locomotive, spring means? being provided. 4for reeling 'up' the curtain.

. .provide a device of'th invention heieindiscl f in :the scopej of `What present invention' has been motive 'of oneof the sta ,y unfrei) STATES PATENT OFFICE. i

i vvrLLraMfL RUSSELL, 'or vvnnisnono, PENNSYLVANIA.'

' l HEADLIGHT-cmnm. i

speomcation ofi-.mm rateat.

. *.ratenteciiayal, .19.12. ma Jann '4 appucamn ary 2, 19121 faena: messages'.

8, .connected '.Afcurved, out-v ported 4by means of brackets Withthe lampf housing 4. Wardly extended vhood 9 is upperledge ofthe plate l6 by means of-'a hinge 10. Arms 11 projectfcrwardly. fromV the edges of the plate 6, adj end of. :the plate, and other from theedges ofv the -plate lower end of the plate. is supported This roller 1 not differ ect of the invention is .to lmownfHartshorne'type. -is type Which maythe roller= readilybe assembled withstandard makes b of headlights, Withoutalteringthe-construcwh tionf-of such headlights. j

further object ofthe invention yis to provide novelmeans` for adjusting portions off-the device, in order totake-up wear.

Wlith. the foregoing yother v objects in view, ivhich- 'will -appearas the description proceeds, thez invention resides vin the combination andarrangementof parte and in the details of 'construction' hereinafter -described and claimed, it .being understood .that changes in the precise embodiment of osed can be made-withis claimed Without depart-ing .from the spirit of the invention. -fnV the accompanying 'dravvings,-Figure ldenotes in side'elevation, a port-ionof a 4locomotive engine to which the device of the applied; Fig. 2 structure shown ail' enlarged `from eing broken away; Fig. 4 is ation of one end of the upper pon-which the curtain is Wound; `Fig. 5 is' a perspective of the adjustable bearing-in -`which therack bar is mounted; *ign tis a section of the bearing-whichcarl ries tlierack bar; and Fig. 7 .is en elevation ndards in which* the cylin-4 To-allwhom 'itmay concern: v

'Be -itknown 'that I, WILLIAM L fRUssELL, Unitedl States, residing at countyl of Tioga and 'State ofvPennsylvanim--have invented a neu7 and useful Headlight-Curtain, Aof-ivhioh the following isa specication. The presentin'vention aimsv to provide a mechanism, actuable by fluid pressure to lower-a curtain'in front of the headlight ofv arms 12 project' .6, adjacent the.` Anupper roller 14 for rotation Ain-theernfis 11. 4 is SprngT'actuated, and 'does further ob]- Mfthere 1s aj rod lo, surrounded the rod 15, as shown at 17. e outer end of1the-1'od15 is .equipped with a 'flattened head 18, adapted to register against rotation in a notc'h19 formed in the upper edge of one offthe arms 11. The other end'ojf the roller lei-is' jour- Aroller 21. upperrollerg 14.' the curtain 22 is equipped Witha pair o is a frontelevation of the injFig. lgF-i 3 is a det Fig.2, 'parts a sectional elev lroller u aconvenient place' for the enginenuxnber, as clearly shown in Fig. 2. A pa' 26, and preferably light chains, are prvided. he lower ends ofthe chains 26 are Vsecured to the roller 21, as shown at '27. The upper ends of the chains 26 are united with the protruding ends ofth cated at 28. i

[Fixed to -ion 29, meshing luto. a rack bar 3 0, the real? .end ofAvhich .oporatesgin a `uid pressure cylinder 31, and is provided with "head'32." e- -ui ressu'e Within the cylinder 31 is controlleg-fthrough-Tapipe .33, en teringjthe-.rear end of the cylinderll The -operation of the. device asj thusj f ai' described, is vvas follows :.-`1 re'spposin .that .ffth'eparte are positioned .as showin-dn*v i umu be ande-1S. sataniques, @um hul -mediumpf der is mounted.. .Y A Referring to the drawings, the .numeral 1 indicates aportion' ofthe boiler of a loco#Y engine, a vsupiaorting platform 2 being upheld u on the v4boilerLbymeans of brackets 3, lor 'in other suita manner. 'The-platform v2 supports the laInp-fljiousi "thereof being denoted by -ltl 1e plate pnillg" 'Y 'through which the 5 "isivieilieffT-hefplate Bf-:may be sup-- one endofthe shaft 2 0. is apiI ii united .with the acent the upper greatly -from the'comn'i'on and Well .Y In the interior of i 1r of iexible elements.v

e pistonthe-leyenda al,

bar il()v will be'forced forwardly, b'ar. 30,

a rotation of the pinion 29,1and conmuetlyx a rotation .ofi the -v shaft and fthe" Vl'o'vv'er roller 21.... the'lower -roller,;'-21 the 'chain's'26 wil e wound, ceusing'a loweringofthe curtain 22, sothat the' lens 5l iu-liidden.l

lVlhn the fiuid' '31 diminishe --th` spring-1 6v4 which has Ibeen-'put under tension of tribe-curtain 2 2,A willf act, toeleveren@ 1.1m-v

` tain,'1nd to retract the rack bor 30 the,

his vertical- 'adjustment of thelstandard'ff be- 4 ore position shownin Fig. 1. Inldevic'es loft u type there-is, ,of necessity, a considerable strain upon` thecurtein 22, and .infor-der thatl the curtain" `need' not begtoii. or.I torted, the two rods 24, the ends, of ywhich are connected 'byy the chains 26',e'areprov vided. @WingV to thep 24, vconnect by thechains 26;the--. portion ofthe c rtain willnotbe therefore the the curti in w When it is deiiiredy to remove'tlie.. upper roller 14, the 'Hood 9 may 'be swung :rearwardly u on its .hinged mitting t e roller 14 to be lifted outoi the arms 11. In structures of this character, operated' by a rack and pinion movement, vthe most frequent# source of difficulty has 4arisen from the fact that a'considerable amount of lost motion occurs between the rack' and the pinion after a brief interval of use. InA the present invention, a means is provided whereby this lost motionmay be takenup.

The means for taking between the rack and t 1e pinion, may take a wide variet of forms. Itis to be noted that the rack ai' 30 is mounted to slide in a bearing 34, having in its upper ed e n, notch adapted to receive the rack er. The bearing 34 may be equipped with threaded lugs 36, protruding through the platform 2, the lugs 36 being equipped with nuts 37. In the lower face ci the bearing 34 there is a key-way 38, the upper face ci which is inclined, as shown at 39. Slidably mounted in the key-Way 38 is a wedge 40, adapted to bear against the` platform 2, and rovided at its upper end with a Harige 41. ll`hrnIgh this flange-41 extends an adpisting member, preferably taking the form of a screw 42, threaded into an opening 43 in they face of the bearing34.

up the llost motion 34 willibe set free for vertical ad'ustment. This vertical adjustment 'may be e ected by rotating the screw 42, 'so as to .advance the wedge 40 into the"key-way 38. Thus, the

ssure within thecylinder 4-whic resence oithejods' distorted, and

l stall times b'ei'ea'da le.-

mounting .10, peradjusted vertically also.. Iii resent in-4 iklfgtence, althoughnot necessarily, e adjustmntofthje cylinder 31 is' rovided for, by' v mountingthe cylinder in t e stan from the lower face of which .the 45 proj the lugs 45 carryin `nuts 46, ptf ed', es'l fore, to epga'ge t e lower facer of vthe -'la.tfoi"1n"2.1y e standard 44 is p'ro- .vid -wit-h a key-way 47, corresponding to' the key-wayfl38 and'with an o ing 48,;cor-y res 'tothevopenin' -In`;t he case of.; thel standard ,the a justin'g' Wedge 4Q and the'a'c'nw'42 "are employed, a'a'befoae, the

ingflcarriedfoutfinfths ui'anner'h described," in 'connection 'with thejbearingun therwk Www-isms u Attention isfdirected the@y het thatfthef -iliid'-` cylinder 8 1... ifaloeate'd' outside ofthe lampi housing. 417, 1` consideration ,isi of importance lfr'thu reason thaf, 1f un fluid pressure rvcylinder'l be located within ythe-lump housing 4,"a1 deterioration ofthe piston head 32 'under the heat of theilani 'ooit"occurs, 'lid'oreoven by locating the ilui ressure cylinder loutside of the lamp vhousing 4, no alteration in the form of the lalnp housing, in order to accommodate the iluidpressure :ylinder 31, is n wise, the uid pressure cylinder 8 1 maybe '95 adjusted, cleaned and repaired, without iiiterfering with the internal arrangement of the lamp v4. Thel illuminatn medium ein -ployed in the lamp housing is frequently electricity, and `in the .present instance there is no danger of injury' to the 'omton or the illuminating mechanism, w the ilmd pressure cylin erfand its accessory parteA are being adjusted.

Having thus described is claimed is: 1

1. The combination with a lamp housing' of al spring-actuated roller jou ed a jacent the to of the housing; a secondary roller journa ed adjacent the the invention,

bottom ofthe' As will be readily under stood, bv loosening ythe nuts 37 thebearing `be elevated, when. worn, so f housing; a curtain wound actuated roller -cndary rclle'rga p imc'n 'connected with` the 1 secondary roller; a rack bar supported sliding movement lund meshing into 'une j pinion; a fluid pressure cylinder into which therack bar. lprotrudes; and 'a piston head upon the rack bar, within the cylinder;4 the cylinder being located outside 'of thela'inp housing. v l

4 2. In a device of the class described 'a supporting plate having an openingto is ,close the lens of a lamp housing; upper and lower arms projecting from the ledges of the p1ate;a spring-actua 'roller removably `Journaled in the upperarms;a roller journaled for rotation in thc lower arms; aourtain connected with the 1 spring-actuated roller and also connected with the other roller; a 'pinion connected with Said other 130 iool iic about the and connected with the aecroller; a racklbar mounted bar. reciprocates; larid a M ]therackpbar, operating within the cylinder.

for sliding movement, and meshing into the pinion; a fluid pressure cylinder in which the rack piston head upon 3. In a device of the class described, a

'supporting structure;-spaced rollers carried thereby; a curtain connected with the rollers; lone of said rollers being equipped with 'on; a rack bar adapted to mesh into the inion; a fluid pressure cylinder into whc the rackV bar protrudes; a platform; an4 adjustable bearing upon the platform, for maintaining the rack bar in mesh with the pinion; and an adjustable standard upon the plat-form, supporting the cylinder, whereby 'the c linder may be adjusted to gorespond wit the adjustment of the rack 4.' In a device ofthe class described, a supporting structure; spaced rollers journa ed thereon; a curtain. engaged with the rollers; a pinion carried by one of the rolli ers; a platform; a rack bar meshinginto the pinion;

a fluid-pressure cylinder in whlch the rack bar operates; and means upon the platform for moving the cylinder and the rack bar transversely, with respect to the platform und the pinion.

5. In a device of the class described, a supporting structure; a spring-actuated roller journaled for rotation thereon; a secondary roller journaled for rotation upon the supporting structure; a cuitainy wound about the spring-actuated rol er; spaced rods connected "with the curtain, adjacentthe lower end of thecultain, the ends'of the rods .protruding beyond the edges of the curtain; spaced' flexible elements connected at their lower ends with the secondary roller, 40

and nt their upper ends connected with the protruding ends of the rods; and fluid-pressure means fo actuating the secondary roller.

In testimony-.that I claim the foregoing 45 as my own, I have hereto atlixed my signature 1n the presence of two witnesses.

WILLIAM L. RUSSELL.

lVitnesses:

HARRY BAnnE'rr, J. P. Tonny. 

